Install SATA drivers on a HP Pavilion DV2320LA AFTER installing Windows XP

How to install AHCI drivers on a HP Pavilion DV2320LA AFTER installing Windows XP on the laptop in IDE mode. In another words how to switch from IDE to SATA after Windows XP installation.
Where for best performance the SATA-HD uses AHCI mode. Which Vista suppports but XP doesn’t. So this is for the ones who installed Windows XP in IDE-mode on a Vista-PC or Vista-Laptop.
So assuming you installed Windows XP in Ide MODE, but you would like XP be able to run in ACPI mode:

1. Goto Intel site: http://downloadcenter.intel.com/Product_Filter.aspx?ProductID=2101&lang=eng
2. Choose Windows XP
3. Choose Intel(R) Matrix Storage Manager
4. Download iata85_cd.exe (File 1)
   
5. Then download 32-bit Floppy Configuration Utility (File 2)
   
6. Open File 2 and extract the whole folder to wherever you like. Make sure you remember the location. Copy from this folder file "IaStor.sys" to C:\windows\system32\
7. Copy the following registry file to your desktop (copy and paste it into notepad) and save as "ahci.reg" (Only copy-paste what is written in italic)
   ———————————————-
   Windows Registry Editor Version 5.00
   [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\pci#ven_8086&dev_27c4]
   "Service"="iaStor"
   "ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"
   [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor]
   "Type"=dword:00000001
   "Start"=dword:00000000
   "Group"="SCSI miniport"
   "ErrorControl"=dword:00000001
   "ImagePath"="system32\\drivers\\iaStor.sys"
   "tag"=dword:00000019
   "DisplayName"="Intel AHCI Controller"
   [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters]
   "queuePriorityEnable"=dword:00000000
   [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Enum]
   "0"="PCI\\VEN_8086&DEV_27C4&SUBSYS_30B2103C&REV_02\\3&B1BFB68&0&FA"
   "Count"=dword:00000001
   "NextInstance"=dword:00000001
   ———————————————-
8. Go to This Computer-> Properties -> Hardware -> Device manager.
9. Under IDE ATA/ATAPI-Controllers, right-click the first INTEL(R) Controller, and update the driver. Manually install the driver!! Make sure in every step you choose yourself what drivers to install!! Browse to the folder where you extracted file 2. Now choose the "iaAHCI.inf" to install. All the AHCI drivers will be installed now.
10. Double check you’ve copied the IaStor.sys file as part of step 6.
11. Now do the following: Run the "ahci.reg " file to add the entries into the registry.
12. Reboot the computer
13. Enter the BIOS. Change the setting for the on board Intel controller to AHCI, save and exit BIOS.
14. Boot into Windows
15. Windows will startup because of the manually installed drivers. Windows will find new hardware and install drivers automatically (because you changed the original driver manually, windows wants to restore this driver). Just ignore this
16. Go to the File 1: " Intel Matrix Storage Manager iata85_cd.exe ". This is a setup file.
17. Run this setup and the "Intel Matrix Storage Manager" will install the complete AHCI-SATA driver.
18. After installation, Restart!

Good Luck!

Andres Rormoser
AL Team
http://www.androidlocation.com/